Ferns
While adding a few, air-cleaning, plants to some of the areas in your home such as the bathroom can help elevate the space and the air quality, bringing the outdoors in is not going to make your house feel modern. The eighties trend of filling your home with ferns has long since fallen by the wayside.
Replant your ferns outside, and make sure that your home feels like a home and not a garden. Instead, why not look for sculptures or interesting art pieces to fill shelf spaces or surfaces which you think are lacking something. You can even make them green if you’re missing the color.